Removal of weld-scale chipping, very heavy rust and corrosion, paint and dirt, and metal and other surfaces. Application for surface roughness, adhesion and delicate preparation for plating or painting, removing paint from surfaces such as wood. For use on steel and finishing preparation.0.0118 in. Corrugated steel wire for life. For operation at speeds up to 4,500 rpm, 1/4. Suitable for drilling. Color: SilverThe set includes:Size: wheel brush 2pc-1-1/2in,1pc-2in,1pc-2-1/2in,1pc-3in,cup brush: 1pc-2in,Bristle material: steelMaterial Dia: 0.0118inMaximum speed: 4500r. P.M: 1/4inPackage Content: 6 * brush setOnly the above package content, other products are not included. Note: The light and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowed measurement error is +/- 1-3cm.